Removes python 3.8 from list of supported versions

pyproject.toml

@@ -19,15 +19,14 @@ name = "abba-python"
 version = "0.9.1.dev0"
 description = "Aligning Big Brains and Atlases (ABBA), controlled from python."
 readme = "README.md"
-requires-python = ">=3.8"
+requires-python = ">=3.9"
 license = { text = "BSD-3-Clause" }
 authors = [{ name = "Nicolas Chiaruttini", email = "[email protected]" }]
 # https://pypi.org/classifiers/
 classifiers = [
     "Development Status :: 3 - Alpha",
     "License :: OSI Approved :: BSD License",
     "Programming Language :: Python :: 3",
-    "Programming Language :: Python :: 3.8",
     "Programming Language :: Python :: 3.9",
     "Programming Language :: Python :: 3.10",
     "Programming Language :: Python :: 3.11",
@@ -72,7 +71,7 @@ repository = "https://github.com/BIOP/abba-python"
 # https://docs.astral.sh/ruff
 [tool.ruff]
 line-length = 88
-target-version = "py38"
+target-version = "py39"
 src = ["src"]
 
 # https://docs.astral.sh/ruff/rules